.sudoku-shell{max-width:492px;margin:0 auto;padding:max(12px,env(safe-area-inset-top)) 16px max(20px,env(safe-area-inset-bottom));min-height:100dvh}.game-topbar{display:flex;align-items:center;justify-content:space-between;height:48px;margin-bottom:18px}.game-brand{display:block;border-radius:8px}.game-brand:focus-visible{outline:3px solid #9a486a;outline-offset:2px}.icon-control{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px}.difficulty-screen{padding-top:22px;text-align:center}.sudoku-symbol{display:grid;grid-template-columns:repeat(3,1fr);width:102px;height:102px;margin:0 auto 26px;background:var(--muted);border:1px solid var(--border);border-radius:20px;padding:10px;transform:rotate(-7deg);gap:3px}.sudoku-symbol>span{display:grid;place-items:center;font-weight:750;font-size:18px;color:#a64c70;background:white;border-radius:5px}.symbol-dot{width:4px;height:4px;border-radius:50%;background:var(--pink)}.difficulty-screen h1{font-size:clamp(25px,6.3vw,32px);letter-spacing:-.9px;font-weight:800;margin-bottom:10px}.intro-copy{color:var(--muted-foreground);line-height:1.7;font-size:15px}.difficulty-screen h2{font-size:14px;text-align:left;font-weight:750;margin:32px 0 12px}.difficulty-list{display:grid;gap:10px}.difficulty-card{display:flex;align-items:center;gap:16px;padding:18px 14px;background:#fff;border:1px solid var(--border);border-radius:16px;text-align:left;cursor:pointer}.difficulty-card>span:nth-child(2){flex:1}.difficulty-card strong{font-size:17px;display:block}.difficulty-card small{display:block;font-size:12px;color:var(--muted-foreground);line-height:1.5;margin-top:3px}.difficulty-dots{display:flex;align-items:flex-end;gap:3px;width:26px;height:24px}.difficulty-dots i{width:6px;height:10px;background:var(--border);border-radius:4px}.difficulty-dots i:nth-child(2){height:16px}.difficulty-dots i:nth-child(3){height:22px}.difficulty-dots i.filled{background:#d97c9d}.quiet-caption{font-size:12px;color:var(--muted-foreground);margin:24px 0}.resume-button{width:100%;margin-top:24px;min-height:52px}.resume-button span{margin-left:auto;font-size:12px;font-weight:500}.game-heading{display:flex;align-items:center;gap:10px;margin-bottom:14px}.game-heading h1{font-size:25px;font-weight:800;letter-spacing:-.6px}.difficulty-badge{font-size:12px;font-weight:700;color:#99506c;background:var(--muted);padding:4px 10px;border-radius:10px}.timer{margin-left:auto;font-variant-numeric:tabular-nums;font-size:17px;font-weight:650}.board-wrap{position:relative;border-radius:14px;overflow:hidden;box-shadow:0 5px 20px #b76b8810}.sudoku-board{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));aspect-ratio:1;border:2px solid #a9778a;border-radius:14px;overflow:hidden;background:white}.sudoku-cell{display:grid;place-items:center;position:relative;background:white;min-width:0;padding:0;border-right:1px solid #eadce2;border-bottom:1px solid #eadce2;font-size:clamp(20px,6.1vw,30px);font-variant-numeric:tabular-nums;line-height:1;cursor:pointer;color:var(--foreground)}.sudoku-cell:nth-child(9n){border-right:0}.sudoku-cell:nth-child(n+73){border-bottom:0}.sudoku-cell.box-right{border-right:2px solid #a9778a}.sudoku-cell.box-bottom{border-bottom:2px solid #a9778a}.sudoku-cell.clue{font-weight:750}.sudoku-cell.entry{color:#a83d67;font-weight:550}.sudoku-cell.related{background:#fff4f8}.sudoku-cell.matching{background:#fbdde8}.sudoku-cell.selected{background:var(--pink);box-shadow:inset 0 0 0 2px #bb5e80;color:var(--foreground)}.sudoku-cell.conflict{background:#ffe3e7;color:#a52842}.sudoku-cell.selected.conflict{box-shadow:inset 0 0 0 2px #a52842}.sudoku-cell:focus-visible{z-index:1;outline:3px solid #7c3753;outline-offset:-3px}.cell-notes{position:absolute;inset:3px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);font-size:clamp(8px,2.3vw,11px);color:#7f6170;font-weight:600}.cell-notes>span{display:grid;place-items:center}.game-tools{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;margin:18px 0}.tool{min-height:55px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border-radius:12px;color:#725564;cursor:pointer}.tool span{font-size:10px;font-weight:650}.tool.active{background:var(--secondary);color:#873e5a}.tool:disabled{opacity:.35;cursor:default}.number-pad{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.number-pad button{min-height:52px;border-radius:13px;background:var(--muted);color:#89415c;font-size:26px;font-weight:650;border:1px solid var(--border);cursor:pointer}.number-pad button:nth-child(n+6){transform:translateX(calc(50% + 4px))}.number-pad button:disabled{opacity:.45}.mode-caption{text-align:center;font-size:11px;color:var(--muted-foreground);margin-top:14px;min-height:18px}.new-game-button{display:flex;margin:9px auto 0;color:#91556b}.pause-cover{position:absolute;inset:0;display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;background:#fff7fb;z-index:2}.pause-cover h2{font-size:23px;font-weight:800}.pause-cover p{font-size:14px;color:var(--muted-foreground);margin-bottom:8px}.pause-cover~*{visibility:hidden}.game-loading{display:flex;align-items:center;justify-content:center;gap:10px;margin:70px 0;color:var(--muted-foreground)}.game-error,.game-notice{border:1px solid var(--border);border-radius:12px;padding:12px;font-size:13px;margin:12px 0}.game-error{color:#a52842}.game-notice{color:#725564}.setting-row{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:14px 0;font-size:14px}.setting-row small{display:block;color:var(--muted-foreground);font-size:12px;margin-top:5px}.setting-row input{accent-color:#b45d7e;width:22px;height:22px}.keyboard-help{color:var(--muted-foreground);font-size:12px;line-height:1.6}.dialog-symbol{margin:0 auto 12px;color:#b45d7e}.victory-symbol{align-items:center;gap:10px;width:90px;height:70px;border-radius:20px;background:var(--muted);color:#a64c70;margin:0 auto 16px;animation:celebrate .45s ease-out}.victory-stats,.victory-symbol{display:flex;justify-content:center}.victory-stats{gap:30px;padding:16px 0}.victory-stats span{color:var(--muted-foreground);font-size:12px;text-align:center}.victory-stats strong{display:block;color:var(--foreground);font-size:21px;margin-top:4px;font-variant-numeric:tabular-nums}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@keyframes celebrate{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}@media(hover:hover) and (pointer:fine){.difficulty-card:hover{border-color:#d88eaa;background:#fff8fb}.icon-control:hover,.tool:not(:disabled):hover{background:var(--muted)}.number-pad button:not(:disabled):hover{background:var(--secondary)}}button:active:not(:disabled){filter:brightness(.97)}.difficulty-card:focus-visible,.icon-control:focus-visible,.number-pad button:focus-visible,.tool:focus-visible{outline:3px solid #9a486a;outline-offset:2px}@media(max-height:740px){.game-topbar{margin-bottom:8px}.game-tools{margin:10px 0}.number-pad button{min-height:46px}.difficulty-screen{padding-top:10px}}@media(min-width:700px){.sudoku-shell{padding-top:24px}.game-topbar{margin-bottom:28px}}@media(prefers-reduced-motion:reduce){.spin,.victory-symbol{animation:none}}